<template>
<el-menu default-active="1-4-1" class="el-menu-vertical-demo" background-color="#545c64" text-color="#fff" active-text-color="#ffd04b" @open="handleOpen" @close="handleClose" :collapse="isCollapse">
  <h3> {{ isCollapse ? '后台' : '通用后台管理系统' }} </h3>
<el-menu-item @click="clickMenu(item)" v-for="item in noChildren" :key="item.path" :index="item.path">
  <i :class= "'el-icon-' + item.icon"></i>
  <span slot="title"> {{item.label}} </span>
</el-menu-item>
  <el-submenu v-for="item in hasChildren" :key="item.path" :index="item.path">
    <template slot="title">
      <i :class= "'el-icon-' + item.icon" ></i>
      <span slot="title"> {{item.label}} </span>
    </template>
    <el-menu-item-group v-for="(subItem, subIndex) in item.children" :key="subItem.path">
      <el-menu-item @click="clickMenu(subItem)" :index="subIndex"> {{subItem.label}} </el-menu-item>
    </el-menu-item-group>
  </el-submenu>
</el-menu>
</template>

<script>
export default {
  name:'CommonAside',
  data() {
    return {
      menu: []
    };
  },
  methods: {
    handleOpen(key, keyPath) {
      console.log(key, keyPath);
    },
    handleClose(key, keyPath) {
      console.log(key, keyPath);
    },
    clickMenu(item) {
      this.$router.push({
        name: item.name
      })
      this.$store.commit('selectMenu', item)
    }
  },
  computed: {
    noChildren() {
      return this.asyncMenu.filter(item => !item.children)
    },
    hasChildren() {
      return this.asyncMenu.filter(item => item.children)
    },
    isCollapse() {
      return this.$store.state.tab.isCollapse
    },
    asyncMenu() {
      return this.$store.state.tab.menu
    }
  }
}
</script>

<style scoped lang="less">
.el-menu-vertical-demo:not(.el-menu--collapse) {
  width: 200px;
  min-height: 400px;
}
.el-menu {
  height: 100%;
  border: none;
  h3 {
    color: #fff;
    line-height: 48px;
    text-align: center;
  }
}
</style>
